【王道JAVA】【程序 31 数组逆序】

题目：将一个数组逆序输出。

public class WangDao {
	public static void main(String[] args) {
		System.out.print("The original array is: ");
		int[] arr = {1, 20, 31, 44, 52, 69, 78};
		for (int i = 0; i < arr.length; i++) {
			System.out.print(arr[i] + " ");
		}
		Reserve(arr);
		System.out.println();
		System.out.print("The reverse array is: ");
		for (int i = 0; i < arr.length; i++) {
			System.out.print(arr[i] + " ");
		}
	}
	
	public static void Reserve(int[] arr) {
		for (int i = 0; i < arr.length / 2; i++) {
			int temp = arr[i];
			arr[i] = arr[arr.length-1-i];
			arr[arr.length-1-i] = temp;
		}
	}
}